Severity: HighAction: Be aware

WordPress SEO plugin Rank Math compromised to backdoor websites

Some downloads of the Rank Math PRO WordPress plugin from the vendor's official website carried malware that planted hidden backdoors in a supply-chain attack last week.

Excerpt from the primary source: BleepingComputer

Who is affected

Small businesses · Enterprises · Developers

Affected technology: WordPress

What you should do · Be aware

No immediate action is indicated. Share this with the relevant teams and watch for updates.

Automated guidance based on this story's classification. Check the linked advisories for specifics.

Sources

We link to original and authoritative sources. Headlines and excerpts belong to their publishers.

Original reporting

WordPress SEO plugin Rank Math compromised to backdoor websites BleepingComputer · bleepingcomputer.com · Oct 19, 2026 · Primary source
Severity: HighAction: ReviewExploitation: Exploited

Ninja Forms plugin flaw exploited to hack WordPress sites

Hackers are exploiting stored cross-site scripting (XSS) vulnerabilities in two unrelated WordPress plugins, Ninja Forms and WPC Product Bundles for WooCommerce, to install backdoors and create rogue admin accounts.

Why it matters

Source reporting says attackers are already exploiting this, so exposed WordPress systems are at immediate risk.

Severity: Informational

Scans for Wordfence Protected Websites, (Tue, Sep 29th)

Starting yesterday, our sensors picked up a small number of scans for "wordfence-waf.php". This particular script is used by Wordfence, a solution to protect WordPress sites. During the Wordfence install, the wordpress-waf.php file will be created in the site's root directory [1].

Severity: HighAction: PatchExploitation: ExploitedCISA KEV

CISA Adds One Known Exploited Vulnerability to Catalog

CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog , based on evidence of active exploitation. CVE-2026-87902 WordPress Core Remote File Inclusion Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise. Binding Operational Directive (BOD) 26-04: Prioritizing Security Updates Based…

Why it matters

CISA lists this as exploited in the wild. Unpatched WordPress and Core systems are exposed to active attacks now.

Patch

Apply the vendor's security update for WordPress and Core.